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mips: switch to generic compat rt_sigaction() 

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2012-12-25 18:55:27 -05:00
parent 0450d22f4b
commit aa584802e5
4 changed files with 5 additions and 54 deletions
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1
arch/mips/Kconfig
View File

@ -42,6 +42,7 @@ config MIPS
select MODULES_USE_ELF_REL if MODULES
select MODULES_USE_ELF_RELA if MODULES && 64BIT
select GENERIC_SIGALTSTACK
select GENERIC_COMPAT_RT_SIGACTION
select GENERIC_COMPAT_RT_SIGQUEUEINFO
select GENERIC_COMPAT_RT_SIGPROCMASK
select GENERIC_COMPAT_RT_SIGPENDING

2
arch/mips/kernel/scall64-n32.S
View File

@ -117,7 +117,7 @@ EXPORT(sysn32_call_table)
PTR sys_mprotect /* 6010 */
PTR sys_munmap
PTR sys_brk
PTR sys_32_rt_sigaction
PTR compat_sys_rt_sigaction
PTR compat_sys_rt_sigprocmask
PTR compat_sys_ioctl /* 6015 */
PTR sys_pread64

2
arch/mips/kernel/scall64-o32.S
View File

@ -386,7 +386,7 @@ sys_call_table:
PTR sys_getresgid
PTR sys_prctl
PTR sys32_rt_sigreturn
PTR sys_32_rt_sigaction
PTR compat_sys_rt_sigaction
PTR compat_sys_rt_sigprocmask /* 4195 */
PTR compat_sys_rt_sigpending
PTR compat_sys_rt_sigtimedwait

54
arch/mips/kernel/signal32.c
View File

@ -55,12 +55,6 @@ extern asmlinkage int fpu_emulator_restore_context32(struct sigcontext32 __user
typedef unsigned int __sighandler32_t;
typedef void (*vfptr_t)(void);
struct sigaction32 {
unsigned int sa_flags;
__sighandler32_t sa_handler;
compat_sigset_t sa_mask;
};
struct ucontext32 {
u32 uc_flags;
s32 uc_link;
@ -278,8 +272,8 @@ asmlinkage int sys32_sigsuspend(compat_sigset_t __user *uset)
return compat_sys_rt_sigsuspend(uset, sizeof(compat_sigset_t));
}
SYSCALL_DEFINE3(32_sigaction, long, sig, const struct sigaction32 __user *, act,
struct sigaction32 __user *, oact)
SYSCALL_DEFINE3(32_sigaction, long, sig, const struct compat_sigaction __user *, act,
struct compat_sigaction __user *, oact)
{
struct k_sigaction new_ka, old_ka;
int ret;
@ -564,50 +558,6 @@ struct mips_abi mips_abi_32 = {
.restart = __NR_O32_restart_syscall
};
SYSCALL_DEFINE4(32_rt_sigaction, int, sig,
const struct sigaction32 __user *, act,
struct sigaction32 __user *, oact, unsigned int, sigsetsize)
{
struct k_sigaction new_sa, old_sa;
int ret = -EINVAL;
/* XXX: Don't preclude handling different sized sigset_t's. */
if (sigsetsize != sizeof(sigset_t))
goto out;
if (act) {
s32 handler;
int err = 0;
if (!access_ok(VERIFY_READ, act, sizeof(*act)))
return -EFAULT;
err |= __get_user(handler, &act->sa_handler);
new_sa.sa.sa_handler = (void __user *)(s64)handler;
err |= __get_user(new_sa.sa.sa_flags, &act->sa_flags);
err |= get_sigset(&new_sa.sa.sa_mask, &act->sa_mask);
if (err)
return -EFAULT;
}
ret = do_sigaction(sig, act ? &new_sa : NULL, oact ? &old_sa : NULL);
if (!ret && oact) {
int err = 0;
if (!access_ok(VERIFY_WRITE, oact, sizeof(*oact)))
return -EFAULT;
err |= __put_user((u32)(u64)old_sa.sa.sa_handler,
&oact->sa_handler);
err |= __put_user(old_sa.sa.sa_flags, &oact->sa_flags);
err |= put_sigset(&old_sa.sa.sa_mask, &oact->sa_mask);
if (err)
return -EFAULT;
}
out:
return ret;
}
static int signal32_init(void)
{
if (cpu_has_fpu) {